From juvenile delinquents to hardened criminals: how El Salvador's Maras have grown up

We saw them close up in La Vida Loca, the documentary made by Christian Poveda, who was later murdered by the very subjects of his film. Killings are common along the rival gang members, who live in the poorest parts of El Savador. But the Maras are growing up. What were once petty criminals are becoming ringleaders of organised crime, with millions of dollars stashed away - leading to fears that they could soon ally themselves with powerful drug cartels in nearby Mexico.